کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5485368 | 1523193 | 2017 | 42 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Wave propagation and absorption of sandwich beams containing interior dissipative multi-resonators
ترجمه فارسی عنوان
انتشار موج و جذب پرتوهای ساندویچ حاوی چند تشدید کننده درونزای داخلی
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کلمات کلیدی
کاهش موج موج پهن باند، مواد متفرقه پرتو ساندویچ، بار ضربه
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
چکیده انگلیسی
In this study, a sandwich beam with periodic multiple dissipative resonators in the sandwich core material is investigated for broadband wave mitigation and/or absorption. An analytical approach based on the transfer matrix method and Bloch theorem is developed for both infinite and finite sandwich structures. Wave attenuation constants are theoretically obtained to examine the effects of various system parameters on the position, width and wave attenuation performance of the band gaps. The wave absorption coefficient of the sandwich beam is quantitatively studied to distinguish wave attenuation mechanisms caused by reflection and absorption. It is numerically demonstrated that a transient blast-induced elastic wave with broadband frequencies can be almost completely mitigated or absorbed at a subwavelength scale. The results of this study could be used for developing new multifunctional composite materials to suppress impact-induced and/or blast-induced elastic waves which may cause severe local damage to engineering structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 76, April 2017, Pages 99-108
Journal: Ultrasonics - Volume 76, April 2017, Pages 99-108
نویسندگان
H. Chen, X.P. Li, Y.Y. Chen, G.L. Huang,